The Air Flo helmet comes with a Easy-Fit-Dial feature that adjust for the perfect fit.  This is a light and comfortable riding helmet.  Featuring superior impact resistance and a vent system with increased airflow.  The adjustable harness closes with a clip.  The helmet also conforms to the VG1 safety standard.  For maximum protection this helmet must fit closely and the harness must always be correctly adjusted and used according to the instruction manual supplied. It should be a firm fit and not uncomfortable, loose or removable when properly fastened.